<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 数组排序；

    ```js

    [3,4,1,2,6,5] ---> [1,2,3,4,5,6]

    ``` -->
    <script>
        var arr = [3,4,1,2,6,5];
        arr.sort(function (a,b){
            if (a < b) {
                return -1;
            } else if (a > b) {
                return 1;
            } else {
                return 0;
            }
        });
        console.log(arr);
    </script>
</body>
</html>